The nasopalatine duct cyst (NPDC) is a nonodongenic cyst according to the world health classification 1992.
It represents the most common maxillary nonodontogenic cyst. It’s accuracy accounts for 0,08 to 1,5%.
Etiopathogenesis is still widly debated. Since the clinical symptoms are often relatively discrete, radiography apperence
as a powerfull tool in diagnosis. Indeed, NPDC usually appear as an around, ovoid or heart shaped radiolucency
located between the roots of central incisors. Nevertheless, the indispensable histopathological analysis
must be conducted to confirm the diagnosis. The aim of this article was to precise the difficulty of differentiating
the nasopalatine duct cyst from some of odontogenic cysts (calcifying cyst, dentigerous cyst) if diagnosis is based
on clinical and radiographic symptoms alone showing the importance of the histopathological analysis.(Med
Buccale Chir Buccale 2005; 11: 31-37).

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